Improvement in machines for cutting barrel-heads



G. R. TOMPKINS, OF ROCHESTER, NEW YORK.

IMPROVEMENT IN MACHlNES FOR CUTTING BARREL-HEADS.

Specification forming part of Letters Patent No. 46,50S, dated February 2l, 1865.

To (tZZ whom it may concern.-

Be it known that I, (l. R. ToMPKiNs, of Rochester, in the county of Monroe and 'State of New York, have invented certain new and useful Improvements inHeading Cutters; and l do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specification, in which- Figure l is a plan or top view of my invention. Fig. 2 isa side elevation of the same. Fig. 3 is a detached face view of the crank J, slotted connectingrod R, pawl-arm Q, and ratchetwheel a.

-Similar letters of reference indicate corresponding parts in the several gures.

The nature of this invention consists in providing a parallel lateral adjustment to the movable feed-roller by hanging both ends in sliding boxes that are connected to an adjustinglever, and connecting the pinion that drives that feed-roller to the shaft by a slot and feather, so as to be kept in gear with the feed-roller pinion by means of an varm connected to the upper sliding box; also, in such a construction and arrangement of the connecting-rod and pawl and ratchet that the crank shall produce an intermittent feed, and during the instant the knife is at its upward stroke.

To enable others to work my invention, I will describe its construction and operation.

rlhe uprights B are framed to the base A, which rests upon suitable legs. They are connected together at the top by the plate w. One end of the shaft D rests in the standard u, and the other has a bearing in the arm c ofthe sliding box f, the journal-bearing being` formed by a projecting hub of the pinion, which is fitted loosely upon that end of the shaft, but made to revolve with it by the feather 7c. The shaft may be provided with a bearing at that end also, if desiiel The upper and lower boxes,f and f', of the feedroller d are connected tothe arms of the rock-shaft'P by short rods g, the lower one of which is not shown. The lever K of this shaft is connected to the vertical arm of the weighted lever L by a rod, lL. The inclined metal grooves E, in which the friction-rollers a" of the knife O run, are bolted to the front of the bed or base A. The ratchetwheel a is keyed to the shaft D, and the pawl-arln y is fitted upon it loosely. The pawl c is kept in gear with the ratchet c by the spring s.

and a heading-bolt is then placed upon the bed between the rollers and against the knife. He then releases that end of the lever by removing his foot, and the weighted .end drops, which causes the bolt to be clasped between the feed-rollers. When the knife `O has nearly reached its upward throw, the feed-rolle;s b and d are acted upon by the ratchet a and pinions m and n, and the bolt is carried forward, so as to project beyond the knife far enough to give properthickness to the heading, which is made by the downward stroke of the knife. The thickness of the heading may be varied by increasingor diminishing the feed, which is done by connecting the rod linearer to or farther from the shaft D. When connected, as seen in Figs. l and 3, it gives the greatest feed, and less when at either of the holes e, Fig. 3. Motion is communicated through the bandwheel l to the main driving-shaft H, and through rod F to the knif'e O. Shaft Gis geared to shaft H by pinions l, and tosha-ft D by the crank J and slotted rod lt and the ratchet. Either end of the rod lt may be slot-ted and the same effect produced. The arm y may be provided with a slot instead of the series of holes e.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination and relative arrangement vof the rock-shaft P and lever K with the upper and lower boxes, f land j", ot' the adjustable feed-roller d, substantially in the manner sl1own,'and for the purpose of producing a parallel adjustment of the said roller.

2. In combination with the adjustable pawl- I 

